for a holiday, this has been a busy time in washington. as the negotiations surrounding that looming fiscal cliff come to a fever pitch just before the new year. but this is also a time of tradition and celebration in the nation's capital, and nobody decks the halls like the team at the white house for christmas. christmas is there, has come to mean a special visit every year, not just from santa claus, but from abc's own barbara walters. barbara? >> terry, in what has become one of my favorite holiday traditions for the fourth year, i had the privilege of interviewing the president and mrs. obama at the white house. this interview was taped days before the tragic shooting in connecticut and was postponed until now. it was the first time the couple sat down together since winning re-election. mrs. obama also took me on a personal tour of what is called the people's house. and it's never more true than during the christmas season. after thanksgiving, more than 80 volunteers from nearly 40 states descend on the white house, trimming 54 trees